Nitrile 90 Specifications

NITRILE (BUNA-N) 90 DUROMETER

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Welcome to our Nitrile 90 Specifications Section

Here you will find our Nitrile 90 specifications chart which can also be downloaded in PDF. The Nitrile 90 durometer material is a harder rubber compared to the Nitrile 70. If you need properties that are different than the ones listed below, please review all of our other popular materials or we can compound the formulation of the rubber material so that the Nitrile 90A rubber specifications suit your needs. Finding the correct material especially if you are using it for an O-ring seal is important as the seal can degrade quickly if the material is not compatible to your environment.

Mykin Inc’s RN00390 Nitrile (BUNA-N) is a general purpose copolymer of butadiene and acrylonitrile in shore 90A durometer. Our general Nitrile 90 compound has a relatively high acrylo content, making it exceptionally resistant to petroleum base oils and hydrocarbon fuels over a temperature range of -40°F to +250°F. Nitrile has good mechanical properties when compared with other elastomers and high wear resistance. Nitrile is generally not resistant to weathering, sunlight and ozone unless they are specially compounded.


ASTM DesignationORIGINAL PROPERTIESASTM D2000 SPECIFICATION
  Durometer, Shore A 90+/-5
  Tensile, psi (MPa), Minimum 1450 (10)
  Elongation, % Minimum 100
  Specific Gravity -
  HEAT AGE, 70 HRS @ 100 C  
  Durometer Change, Points +/- 15
  Tensile Strength Change, % Maximum +/- 30
  Elongation Change, % Maximum -50
     
B14 COMPRESSION SET, 22 HRS @ 100 C  
  Original Deflection, % Maximum 25 (Button)
     
EA14 WATER RESISTANCE, 70 HRS @ 100C  
  Durometer Change, Points +/-10
  Volume Change, % +/-15
     
EF11 FUEL A RESISTANCE, 70 HRS @ 23C  
  Durometer Change, Points +/-10
  Tensile Change, % Maximum -25
  Elongation Change, % Maximum -25
  Volume Change, % -5/+10
     
EF21 FUEL B RESISTANCE, 70 HRS @ 23C  
  Durometer Change, Points 0/-30
  Tensile Change, % Maximum -60
  Elongation Change, % Maximum -60
  Volume Change, % Maximum 0/+40
     
EO14 ASTM #1 OIL, 70 HRS @ 100C  
  Durometer Change, Points -5/+15
  Tensile Change, % Maximum -25
  Elongation Change, % Maximum -45
  Volume Change, % -10/+5
     
EO34 ASTM #3 OIL, 70 HRS @ 100C  
  Durometer Change, Points -10/+5
  Tensile Change, % Maximum -45
  Elongation Change, % Maximum -45
  Volume Change, % Maximum 0/+25
     
F16 LOW TEMPERATURE BRITTLENESS ASTM D2137  
  Method A, 9.3.2 Pass
  3 Minutes @ -35 C Non-Brittle

SPECIFICATIONS MET

  • ASTM D2000-01 Grade M7BG910 B14 EA14 EF11 EF21 EO14 EO34 F16
  • ASTM D2000-75 Grade 7BG915 B14 E14 E34 E51 E61 F16 L14